Workflow builder: SSE streaming, UI overhaul, PREVIOUS_OUTPUT templates, and local config

.config/config.json

@@ -0,0 +1,36 @@
+{
+  "providers": [
+    {
+      "id": "openai",
+      "name": "OpenAI",
+      "enabled": true,
+      "models": [
+        {
+          "id": "gpt-5",
+          "name": "GPT-5",
+          "reasoningEfforts": ["minimal", "low", "medium", "high"]
+        },
+        {
+          "id": "gpt-5-mini",
+          "name": "GPT-5 Mini",
+          "reasoningEfforts": ["minimal", "low", "medium", "high"]
+        },
+        {
+          "id": "gpt-5-nano",
+          "name": "GPT-5 Nano",
+          "reasoningEfforts": ["minimal", "low", "medium", "high"]
+        },
+        {
+          "id": "gpt-5.1",
+          "name": "GPT-5.1",
+          "reasoningEfforts": ["none", "low", "medium", "high"]
+        },
+        {
+          "id": "gpt-5.2",
+          "name": "GPT-5.2",
+          "reasoningEfforts": ["none", "low", "medium", "high", "xhigh"]
+        }
+      ]
+    }
+  ]
+}

.gitignore

@@ -18,13 +18,16 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 
-# Env files
-.env
-.env.local
-.env.*.local
-
 # OS
 .DS_Store
 
 # Scripts
 setup.sh
+
+# Local config
+.config/default-workflow.json
+
+# Environment files (safety net — never commit secrets)
+.env
+.env.local
+.env.*.local